US4258108A - Leak-proofing of button cells - Google Patents

Leak-proofing of button cells Download PDF

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Publication number
US4258108A
US4258108A US06/139,744 US13974480A US4258108A US 4258108 A US4258108 A US 4258108A US 13974480 A US13974480 A US 13974480A US 4258108 A US4258108 A US 4258108A
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US
United States
Prior art keywords
binding material
hydroxide
electrolyte
synthetic plastic
plastic seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/139,744
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English (en)
Inventor
Helmut Glaser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VARTA Batterie AG
Original Assignee
VARTA Batterie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VARTA Batterie AG filed Critical VARTA Batterie AG
Application granted granted Critical
Publication of US4258108A publication Critical patent/US4258108A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/34—Gastight accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/197—Sealing members characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a galvanic element, and particularly a button cell, having an alkaline electrolyte in a metal housing which is closed in gas-tight manner by means of a synthetic plastic seal between the housing cup and the lid.
  • Alkaline button cells and particularly those of rechargeable Ni/Cd type, are frequently used in applications in which, unlike in the customary use in flashlights, flashguns or electric shavers, there is required a useful life of five years or more.
  • An illustrative application is found in printed circuits, to which the button cells are fixedly soldered, so that they are difficult to replace if defective.
  • this is accomplished by introducing the hydroxide binding material into that outer region of the sealing area in which it is normally precluded from all contact with the electrolyte.
  • This can be accomplished by immersing the button cell in a solution of a acidly reacting material, which, after crystallization, can easily be wiped from bare surfaces of the cell but which remains behind in the ring-shaped sealing region, and there is held in place by means of a synthetic lacquer.
  • a synthetic lacquer In principle it is also possible to apply the hydroxide binding material to the seal in the form of a paste.
  • the matting ring To attach the matting ring, it is pressed against the sealing surface by means of shrink tubing, and the neutralizing material is thereby simultaneously protected from external moisture. Similar protection can of course also be obtained by lacquer treatment, or by encasing the whole cell in synthetic resin.
  • FIG. 1 shows a cross-section of a preferred form of cell housing embodying the present invention
  • FIG. 2 shows another preferred configuration of the seal
  • FIG. 3 shows still another embodiment of the invention in cross-section as applied to a particularly extended sealing region.
  • this shows a button cell housing with a ring matting.
  • the sealing region between the housing cup 1 and the lid 2 is filled by the synthetic plastic seal 3.
  • Its upper rim is covered with the annular mat 4 which contains the hydroxide binding material 5. Due to the tension of shrink tubing 6 the annular matting 4 is subjected to sufficient compressive force against the synthetic plastic seal 3.
  • FIG. 2 shows a preferred embodiment of the seal which resides in that the ring shaped synthetic plastic seal 3 itself is provided on that side of it which faces the rim of the lid with grooves or depressions 7 which contain the hydroxide binding material 5.
  • FIG. 3 shows a button cell which is sealed against electrolyte escape in accordance with the invention and which has an exceptionally extended sealing region. This includes not only the crimped region but extends over the entire interior surface of the lid, whereby in particular the creepage path for the electrolyte is greatly extended.
  • this cell is provided with a metallic disk 9 which makes contact with the interior surface of lid 2 by means of a concentric protrusion 10.
  • the synthetic plastic seal 3 is formed as a round plate except for a central opening which is left for the protrusion 10. This round plate is compressed between disk 9 and lid 2 and extends at its edge into the crimped area.
  • Leaf spring 8 provides for the necessary compression of synthetic plastic seal 3. Its upper and lower surfaces are provided with concentrically encircling grooves 7 which are provided with the hydroxide binding material 5 in a manner similar to that in which this is done for synthetic plastic ring 3 in FIG. 2.
  • auxiliary sealing material such as bitumen may be placed in grooves 7. In this manner there exists a sealing region 11 having an extended creepage path.
  • a further embodiment of the invention involves utilizing, for the placement of the hydroxide binding material, a hollow space present between a miniature button cell and its surrounding second housing, according to the above-mentioned U.S. Pat. No. 3,891,462.
  • boric acid in addition to the above-mentioned boric acid, other solids are also suitable as the hydroxide binding material, provided they exhibit an acidic reaction in an aqueous medium.
  • examples are the anhydrides of weak inorganic acids such as B 2 O 3 , As 2 O 3 , As 2 O 5 , or the acid salts of multibasic acids such as NaH 2 PO 4 , Na 2 H 2 P 2 O 7 .
  • organic solids with acidic characteristics may be used for the inventive purposes.
  • examples are ascorbic acid or higher fatty acids.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Lubricants (AREA)
US06/139,744 1979-05-16 1980-04-14 Leak-proofing of button cells Expired - Lifetime US4258108A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2919716 1979-05-16
DE19792919716 DE2919716A1 (de) 1979-05-16 1979-05-16 Galvanisches element, insbesondere knopfzelle

Publications (1)

Publication Number Publication Date
US4258108A true US4258108A (en) 1981-03-24

Family

ID=6070854

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/139,744 Expired - Lifetime US4258108A (en) 1979-05-16 1980-04-14 Leak-proofing of button cells

Country Status (6)

Country Link
US (1) US4258108A (ja)
JP (1) JPS55154059A (ja)
DE (1) DE2919716A1 (ja)
FR (1) FR2457016B1 (ja)
GB (1) GB2052840B (ja)
IT (1) IT1131491B (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559283A (en) * 1984-08-21 1985-12-17 Raychem Corporation Battery casing
US4623599A (en) * 1985-06-27 1986-11-18 Union Carbide Corporation Double-grooved gasket for galvanic cells
US4791034A (en) * 1987-02-10 1988-12-13 Rayovac Corporation Sealing sleeve
US4882239A (en) * 1988-03-08 1989-11-21 Minnesota Mining And Manufacturing Company Light-rechargeable battery
GB2238421A (en) * 1989-11-24 1991-05-29 Duracell Inc Aqueous electrochemical cell
US6231625B1 (en) 1997-10-20 2001-05-15 Micron Technology, Inc. Methods of insulating a thin-profile battery
US6468691B1 (en) 1999-03-01 2002-10-22 Eveready Battery Company, Inc. Electrochemical cell with improved gasket and seal
US20100247540A1 (en) * 2003-10-30 2010-09-30 Chemocentryx, Inc. Methods and Compositions For Modulating Angiogenesis
US10700362B2 (en) 2016-09-15 2020-06-30 Energizer Brands, Llc Coatings for mitigation of coin cell ingestion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037447A1 (de) * 1980-10-03 1982-05-19 Varta Batterie Ag, 3000 Hannover Galvanisches element
CH654718GA3 (ja) * 1984-02-20 1986-03-14
DE102007018259A1 (de) * 2007-04-13 2008-10-16 Varta Microbattery Gmbh Knopfzelle mit beschichteter Außenseite
JP5325619B2 (ja) * 2009-03-17 2013-10-23 日立マクセル株式会社 扁平形電池
JP5839802B2 (ja) * 2010-03-15 2016-01-06 セイコーインスツル株式会社 電気化学セル用ガスケット及び電気化学セル
JP5909519B2 (ja) * 2014-04-02 2016-04-26 東レプラスチック精工株式会社 コイン形電池用パッキンおよびその製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623915A (en) * 1969-07-11 1971-11-30 Ching Koon Pun Electric dry cells
US3713896A (en) * 1970-08-19 1973-01-30 Esb Inc Seal for electrochemical cells
US3891463A (en) * 1972-12-21 1975-06-24 Kapsch Telephon Telegraph Leak-proof galvanic cell
US3990918A (en) * 1972-09-13 1976-11-09 P. R. Mallory & Co., Inc. Energy storage device with multi-function protective seal
US4011371A (en) * 1975-12-17 1977-03-08 Gte Sylvania Incorporated Means for detecting and neutralizing leaks in electrochemical cells
US4064329A (en) * 1974-07-29 1977-12-20 Mallory Batteries Ltd. Cell sealing means
US4122241A (en) * 1977-03-11 1978-10-24 P. R. Mallory & Co. Inc. Modified grommet for long term use cells

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1086710A (en) * 1910-07-05 1914-02-10 Ernest A Hoopes Electric hand-lamp and casing.
US1295122A (en) * 1917-02-16 1919-02-25 Rufus N Chamberlain Electric battery.
US2554504A (en) * 1948-06-29 1951-05-29 Ruben Samuel Rechargeable cell
GB675044A (en) * 1949-02-26 1952-07-02 Mallory Batteries Ltd Improvements in alkaline electric cells
DE1231773B (de) * 1965-05-14 1967-01-05 Varta Pertrix Union Ges Mit Be Galvanisches Trockenelement mit Zinkchlorid-Elektrolyten
US3457117A (en) * 1967-03-23 1969-07-22 Mallory & Co Inc P R Leakproof electrochemical cell
FR2086790A5 (en) * 1970-04-09 1971-12-31 Clevite Corp Seal for wafer alkaline cells
BE787915A (fr) * 1972-08-22 1973-02-23 Union Carbide Corp Revetement d'etancheite et de protection pour cellule galvanique alcaline
DE2424428A1 (de) * 1974-05-20 1975-12-04 Fuji Electrochemical Co Ltd Alkalizelle
JPS5231060A (en) * 1975-09-04 1977-03-09 Kyowa Hakko Kogyo Co Ltd Synthesis of 6-amidinonaphthalene derivatives
JPS55109362A (en) * 1979-02-17 1980-08-22 Yuasa Battery Co Ltd Alkaline cell

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623915A (en) * 1969-07-11 1971-11-30 Ching Koon Pun Electric dry cells
US3713896A (en) * 1970-08-19 1973-01-30 Esb Inc Seal for electrochemical cells
US3990918A (en) * 1972-09-13 1976-11-09 P. R. Mallory & Co., Inc. Energy storage device with multi-function protective seal
US3891463A (en) * 1972-12-21 1975-06-24 Kapsch Telephon Telegraph Leak-proof galvanic cell
US4064329A (en) * 1974-07-29 1977-12-20 Mallory Batteries Ltd. Cell sealing means
US4011371A (en) * 1975-12-17 1977-03-08 Gte Sylvania Incorporated Means for detecting and neutralizing leaks in electrochemical cells
US4122241A (en) * 1977-03-11 1978-10-24 P. R. Mallory & Co. Inc. Modified grommet for long term use cells

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559283A (en) * 1984-08-21 1985-12-17 Raychem Corporation Battery casing
US4623599A (en) * 1985-06-27 1986-11-18 Union Carbide Corporation Double-grooved gasket for galvanic cells
US4791034A (en) * 1987-02-10 1988-12-13 Rayovac Corporation Sealing sleeve
US4882239A (en) * 1988-03-08 1989-11-21 Minnesota Mining And Manufacturing Company Light-rechargeable battery
GB2238421A (en) * 1989-11-24 1991-05-29 Duracell Inc Aqueous electrochemical cell
US6231625B1 (en) 1997-10-20 2001-05-15 Micron Technology, Inc. Methods of insulating a thin-profile battery
US6235423B1 (en) * 1997-10-20 2001-05-22 Micron Technology, Inc. Button-type batteries with an insulating jacket
US6440183B1 (en) 1997-10-20 2002-08-27 Micron Technology, Inc. Methods of insulating button-type batteries
US6458482B2 (en) 1997-10-20 2002-10-01 Micron Technology, Inc. Battery with insulative member
US6468691B1 (en) 1999-03-01 2002-10-22 Eveready Battery Company, Inc. Electrochemical cell with improved gasket and seal
US20100247540A1 (en) * 2003-10-30 2010-09-30 Chemocentryx, Inc. Methods and Compositions For Modulating Angiogenesis
US10700362B2 (en) 2016-09-15 2020-06-30 Energizer Brands, Llc Coatings for mitigation of coin cell ingestion

Also Published As

Publication number Publication date
GB2052840B (en) 1983-04-07
FR2457016A1 (fr) 1980-12-12
DE2919716A1 (de) 1980-11-27
IT1131491B (it) 1986-06-25
GB2052840A (en) 1981-01-28
IT8022056A0 (it) 1980-05-14
FR2457016B1 (fr) 1986-12-12
JPS55154059A (en) 1980-12-01

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